55215366136535 has 32 divisors (see below), whose sum is σ = 73964398793472. Its totient is φ = 39221964794880.

The previous prime is 55215366136459. The next prime is 55215366136547. The reversal of 55215366136535 is 53563166351255.

It is not a de Polignac number, because 55215366136535 - 2⁸ = 55215366136279 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133219292 + ... + 133633118.

It is an arithmetic number, because the mean of its divisors is an integer number (2311387462296).

Almost surely, 2^{55215366136535} is an apocalyptic number.

55215366136535 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55215366136535 is a deficient number, since it is larger than the sum of its proper divisors (18749032656937).

55215366136535 is a wasteful number, since it uses less digits than its factorization.

55215366136535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470303.

The product of its digits is 36450000, while the sum is 56.

The spelling of 55215366136535 in words is "fifty-five trillion, two hundred fifteen billion, three hundred sixty-six million, one hundred thirty-six thousand, five hundred thirty-five".